Model:Spbgc: Difference between revisions

Revision as of 18:08, 21 July 2015

Also known as
Model type	Single
Model part of larger framework
Note on status model
Date note status model

Spatial dimensions	2D
Spatial extent
Model domain
One-line model description	2D Numerical Simulation of Turbidity Currents
Extended model description	High order two dimensional simulations of turbidity currents using DNS of incompressible Navier-Stokes and transport equations.

Keywords:	turbidity current, flow structure,

Name	Zachary Borden
Type of contact	Model developer
Institute / Organization	UCSB
Postal address 1	Engr II Bldg, Room 2301
Postal address 2	Mechanical Engineering Department, UC Santa Barbara
Town / City	Santa Barbara
Postal code	93106
State	California
Country	United States
Email address	zborden@gmail.com
Phone	805 617-9887
Fax	805 617-9887

Supported platforms	Unix, Linux
Other platform
Programming language	C
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2000
Does model development still take place?	Yes
If above answer is no, provide end year model development
Code development status
When did you indicate the 'code development status'?
Model availability	As code
Source code availability (Or provide future intension)
Source web address
Source csdms web address
Program license type	GPL v2
Program license type other
Memory requirements	Typical ratio: 2,000,000 nodes requires 1 Gbyte
Typical run time	Anywhere from minutes to days depending on the resolution

Describe input parameters	Input parameters: * Geometrical parameters: Nx, Ny, domain size * Flow Parameters: Reynolds, Peclet * Particle Parameters: Settling velocities. The complete list of input parameters is set and described in the file input.inp
Input format	ASCII
Other input format
Describe output parameters	It can output local velocity, vorticity, concentration, stream-function, and all derivatives of velocity necessary to calculate dissipation, viscous momentum diffusion, kinetic energy flux, work by pressure forces, and change in kinetic energy. These quantities are written out in a binary file. It also has routines for calculating the local height profile and tip position of gravity currents and internal bores, which are outputted every time step and stored as ASCII txt files.
Output format	ASCII, Binary
Other output format
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	Yes
Describe post-processing software	The data is written out to binary files. I have a file called dataconv that converts the binary files to a format readable by the visualization software paraview. I also often use MATLAB to do post-processing on the data in the binary files.
Visualization software needed?	Yes
If above answer is yes	Matlab
Other visualization software	Paraview

Describe processes represented by the model	Any type of turbidity (or gravity) currents could be modeled with this code. I also use it for modeling internal bores.
Describe key physical parameters and equations	Incompressible flow equations: Navier-Stokes with or without Boussinesq approximation. Transport equation to describe the motion of particles (or Salanity or Temperature).
Describe length scale and resolution constraints	With the current version of the code (DNS and no turbulence model) we are restricted to low Reynolds numbers. Up to maximum 10,000.
Describe time scale and resolution constraints	A parameter called the CFL number controls the time step in relation to the spatial scales. For boussinesq simulations, a CFL number of 0.2 is usually sufficient for code stability. However, for the non-boussinesq simulations, I usually have to lower the CFL number to around 0.05. It's really just a bit of trial and error though.
Describe any numerical limitations and issues

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?

Is there a manual available?	No
Upload manual if available:
Model website if any
Model forum / discussion board

Comments

This part will be filled out by CSDMS staff

OpenMI compliant	No not possible
BMI compliant	No not possible
WMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component
Is this a data component

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